Padlock



(No Model.) 2 lSheets-Sheet 1.

' C. L. LINCOLN.

Y PADLOGK.

No. 540,795. n Patented June ll, 1895.

i? Fifi" "Ilm lllll RIU!! (No Model.) k 2 sheets-sheet 2.

' C. L. LINCOLN.

PADLOGK.

No. 540,795. Patented June 11, 1895.

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.vided with an inwardly opening notch 4 vwith a lower lip 8 which movesin the path ilNrrE raras CHARLES L. LINCOLN, OF STAMFORD, CONNECTICUT.

PAD LOC K.

SPECIFICATIONVforming part of Letters Patent No. 540,795, dated June 111895.

Application tiled April 20, 1894. Serial No. 5081308. (No model.)

To @ZZ whom it may concern,.-

. Be it known that I, CHARLES L. LINCOLN, of Stamford, county ofFairfield, State of Connecticut, have invented certain new and usefulImprovements in Locks, of which the following is a specification,reference being had to .the accompanying drawings.

The object of my invention is to produce improvements especially adaptedfor padlocks, whereby the shackle dog or detent may be automaticallyactuated in both directions, simply by pushing or pulling the shackle;by which the dog is locked by the shackle iu the open position when theshackle is raised, and by which the use of springs for actuating thetumblers may be dispensed with, if preferred.

In the accompanying drawings, Figure I is a side elevation of one formof my lock with the side removed, showing the shackle in the lockedposition. Fig. II is a similar view showing the shackle released fromthe detent. Fig. III is a bottom View of the lock. Fig. IV is a View ofa key. Fig. V is a sec-y tion on the line oc x of Fig. I. Fig. VI is aperspective view of the collectingfbar. Fig. VII is a bottom view of mylock when operated by a combination. Fig. VIII shows my lock with amodified form of dog `or detent` and spring-actuated oscillatingtumblers. Fig. IX is a similar view showing another modification withstaple-shackle. Fig. X shows a component form of dog, as in Fig. VIII,with sliding tumblers. y

Referring to the tgu'res on the drawings, l indicates the case of mylock which may be made of suitable shape, size, and dimensions and whichcarries, in any usual manner, a shackle 3. The, shackle is preferablyproadapted tobe engaged and held by the detent 5 of a movable dog 6, forexample, pivoted upon a pin 7. The dog is also provided of the end ofthe shackle. Itv will be perceived, therefore, that if the dog is freeto move upon its pivot pin it will be operated by reason of theengagement ot' the detent 5 with the notch 4, bypulling the shackle inone direction and, by the end of the shackle striking thc lip 8, it willbe operated in the other direction by pushing the shackle. The

dog is, therefore, positively and exclusively actuated by the shackle inboth the locking and unlocking operations.

It is essential tothe practical operation of g. this class of locks thatthe dog should be locked in a xed position when the shackle is out ofengagement with the dog; that is, when the lock is unlocked. Withoutthis the dog might be operated by other'means than the shackle, and theoperation of the lock in that way be interfered with so as to injure themechanism or exclude the shackle. Heretofore a spring-actuated dog hasbeen employed, but that means is ineectual' except as against accidents,and is only partially edectual in that direction. I, therefore, providepositive mechanism for locking the dog in the open position, when theshackle is unlocked. The pivoted end of the shackle may, for thispurpose, be providedwith a convex surface 9, which bears against theeccentric edge IO of the dog, and positively locks it in place kuntilthe .shackle is returned to the locked position. To release the dog whenthe shackle is returned to the locked position, I provide the concaverecess 1lv whose curve conforms to the sweep of the dog on its pivot.This Vcurve may be struckfrom the centerl of the pin 7 by a radius alittle greater than the distance between the center of the pin 'Zand theouter curve or contour 12 of the dog.

.In Figs. I, II and IX the shackle is shown as directly operating thelock and dog, but in Figs. VIII and X it is shown as locking it byintermediate mechanism.

In Fig. IX a modification of shackle is illustrated in'which a recess13, in its stem 14a, acts substantially upon the above-explainedprinciple to lockthe dog. Y 9o To lock the closed dog and secure theshackle, suitable tumblers lli are provided. They may consist of loosesliding plates, as shown for example in Figs. I, II and IX, or ofspring-actuated sliding plates, as shown in Fig. X, or they may beoscillatin g tu mblers, as shown in Fig. VIII. I prefer, however,toemploy simply the sliding plates referred to in the lirst instance andto employ, in connection therewith, a locking but-ton.V

W here sliding tumblers areemployed, I pre- -fer to provide, as usual,ordinary stationary spacing plates 1.5 provided with gatings 16 topermit the free passage of the dog tail, 24., and

which, having flanges v17, act as guideways for the reciprocation of thetumblers and also to prevent interference of the tumblers one withanother in their several respective movements. The spacing plates may beheld in position by studs or pins 18 secured to the Walls of the case,or by other suitable means.

The locking button includes preferably a collecting bar 19 which workswithin the case and is of suicient length to actuate each of the tumblers simultaneously. The collecting bar is united by a shank 20 to anoutside knob or button 21. The shank 2O Works in a slot 22 in the caseand is easily moved either bya key inserted against one end of thetumblers, or by the knob 2l when the key is withdrawn. The tumblers, ofWhatever description, are, as usual, provided with galings 23, of ashape, size, and depth to receive the tail 24 of the dog, when thegatings of the several tumblers are in alignrnentand permit the dog, bypulling the shackle, to release the notch 4 in the end thereof. Thegatings of the tumblers are, as usual, variously located in each of thetu mblers, so that a specially bitted key, such for example as thatillustrated in Fig. IV of the drawings, is necessary to bring thegatings into alignment and to unlock the shackle.

From this description it will be understood that when the tumblers areset by the key, and the shackle is released, the alignment of thegatings maybe, after the shackle is again closed, destroyed and the doglocked ont by the movement of the locking button. As above stated, Iprefer to employ a locking button, because by this means the use ofsprings in locks of this description maybe entirely dispensed with, andthe liability of the lock to get out of order, which is incidental tothe use of springs, avoided.

Then oscillating tumblers, as shown in Fig. VIII, areemployed. the usualsprings 27 are -preferably provided for holding the gatings of thetumblers normally out of alignment.

The sliding tumblers may movetransversely across the axis of the pivot 7of the dog, or they may move at right angles thereto, variouslyillustrated in Figs. I, II, IX and X.

2S indicates a key hole through which the tumblers may be actuated bythe insertion of a key, as for example, the broad flat oneillustrated.Instead of a key the tumblers may be exposed, as shown in Fig. VII andbe provided' with any usual combination system by which the tumblers maybe severally set manually.

In dispensing with springs in locks of this class it is not necessarythat the dog should be directly controlled or operated upon by thetumblers. For example, the dog may be provided with an abutmentface 29against which one end of a pivoted lever 30 works to lock the dog, whilethe other end of thelever may carry a tail piece 31 which is controlledby the tumblers in the same manner as the tail piece 24 is controlled inthe other forms of locks. (See Figs. VIII and IX.)

I do not confine myself to the details of construction herein shown anddescribed, but reserve the right to modifyand vary my lock within thescope of my invention, as suggested by the various modifications, or insuch other manner as may hereafter appear to be desirable.

What I claim isl. In a lock, the combination with a case and shackle, ofa movable dogadapted to engage the shackle and actuated bythe shackle inboth thelocking and unlockingoperations, mechanism for locking the dogin the closed position and for positively locking the dog,r in the openor releasing position, said mechanism for locking the dog in the openposition being operatively connected with the shackle, substantially asset forth.

2. In a lock, the combination with a case and shackle, of a movable dogadapted toen gage the shackle and actuated by it in both the locking andunlocking operation, tumblers adapted to lock the dog in the closedposition, manually actuated mechanism for throwing the tumblers out ofalignment, and dog locking mechanism operatively connected with theshackle and adapted to be actuated by it to lock the dog in the openposition, substantially as set forth.

3. Ina lock constructed Without springs, the combination willi a caseand shackle, of a movable dog adapted to be actuated by the shackle,tumblers controlling the movement ofthe dog, and mechanism for throwingthe tumblers out ot alignment, substantially as set forth.

4. The combination with a lock case, shackle and dog, of movabletumblers and gatings therein, a tail piece on the dog adapted to enterthe gatiugs in the tumblers, and a col-I lecting bar adapted to beactuated from the outside for destroying the alignment of the gatings ofthe tumblers, substantially as set forth.

5. The combination with a lock case, notched shackle, and freelymovable, springless, pivoted dog, of a detent and a lip upon thedogadapted to be actuatedin both directions by the shackle, andmechanism for con trolling the movement of the dog, substan-Y tially asset forth.

In testimony of all which I have hereunto subscribed my name.

CHARLES L. LINCOLN. lVitnesses:

WM. F. WATERBURY, J No. A. WATERS.

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